This document summarizes a talk given by Sebastian Deterding on gamification. It discusses how gamification aims to use elements from games like points, badges, and leaderboards in non-game contexts. However, Deterding argues that most current gamification fails to truly tap into what makes games fun and engaging. He draws on the work of philosophers like Roger Caillois and Raph Koster to argue that fun in games comes from mastery through interesting challenges, not just from extrinsic rewards. For gamification to mature, it needs to focus more on gameplay elements that foster creativity, play, and learning through problem-solving.